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A lower gastrointestinal bleed is defined as bleeding originating distal to the ileocecal valve, which includes the colon, rectum, and anus. [2] LGIB was previously defined as any bleed that occurs distal to the ligament of Treitz, which included the aforementioned parts of the intestine and also included the last 1/4 of the duodenum and the entire area of the jejunum and ileum. [1]
Gastrointestinal bleeding can be roughly divided into two clinical syndromes: upper gastrointestinal bleeding and lower gastrointestinal bleeding. [2] About 2/3 of all GI bleeds are from upper sources and 1/3 from lower sources. [14] Common causes of gastrointestinal bleeding include infections, cancers, vascular disorders, adverse effects of ...
Diverticular disease can present with painless rectal bleeding as bright red blood per rectum. Diverticular bleeding is the most common cause of acute lower gastrointestinal bleeding. [9] However, it is estimated that 80% of these cases are self-limiting and require no specific therapy. [10]
Non-biliary causes of PCS may be caused by a functional gastrointestinal disorder, such as functional dyspepsia. [6] Chronic diarrhea in postcholecystectomy syndrome is a type of bile acid diarrhea (type 3). [3] This can be treated with a bile acid sequestrant like cholestyramine, [3] colestipol [2] or colesevelam, [7] which may be better ...
Symptoms of ischemic colitis vary depending on the severity of the ischemia. The most common early signs of ischemic colitis include abdominal pain (often left-sided), with mild to moderate amounts of rectal bleeding. [11] The sensitivity of findings among 73 patients were: [12] abdominal pain (78%) lower gastrointestinal tract bleeding (62%)
Gastric varices are dilated submucosal veins in the lining of the stomach, which can be a life-threatening cause of bleeding in the upper gastrointestinal tract.They are most commonly found in patients with portal hypertension, or elevated pressure in the portal vein system, which may be a complication of cirrhosis.
Hemosuccus pancreaticus is a rare cause of hemorrhage in the gastrointestinal tract.It is caused by a bleeding source in the pancreas, pancreatic duct, or structures adjacent to the pancreas, such as the splenic artery, that bleed into the pancreatic duct, which is connected with the bowel at the duodenum, the first part of the small intestine.
Patients commonly have elevated C-reactive protein and a high white blood cell count. [10] In Asia it is usually on the right (ascending colon), while in North America and Europe, the abdominal pain is usually on the left lower side (sigmoid colon). [2] [8] There may also be fever, nausea, diarrhea or constipation, and blood in the stool. [1]